Synthesis and two-photon absorption properties of ladder-type chromophores with functionalized pyrazine units fused as the end-groups

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題名:	Synthesis and two-photon absorption properties of ladder-type chromophores with functionalized pyrazine units fused as the end-groups
作者:	林子超;Lin, Tzu-Chau;Tsai, Bo-Kai;Liu, Yi-You;Tsai, Ming-Yu
貢獻者:	理學院化學學系
關鍵詞:	Chromophores;Conjugation;Optical power-�limiting;Two-photon absorption
日期:	2014-01-01
上傳時間:	2026-04-21 14:22:16 (UTC+8)
出版者:	Wiley-VCH Verlag;Weinheim: WILEY-VCH Verlag
摘要:	摘要： Three new multipolar chromophores based on ladder‐type units (fluorene, indenofluorene, and bisindenofluorene) as the central π‐bridges and with functionalized pyrazine moieties fused at the molecular terminal positions have been designed and synthesized in order to serve as a set of model compounds for the study of possible effects on the molecular two‐photon absorption (2PA) properties that might be introducible by the structural arrangement. Preliminary experimental results showed that these model dye molecules display broad and intense 2PA in the near‐IR region. Tentative analysis of the relationship between structure and 2PA revealed that the π‐conjugation length of the central oligo‐p‐phenylene component is closely related to the magnitude of overall molecular 2PA and that such a structural motif provides access to highly efficient nonlinear absorbers. Three multipolar chromophores based on ladder‐type units as the central π‐bridges with functionalized pyrazine moieties fused as the end‐groups were synthesized for study of two‐photon absorption (2PA). The π‐conjugation length of the central oligo‐p‐phenylene component is closely related to the magnitude of 2PA, and such a structural motif provides access to highly efficient nonlinear absorbers. 其他題名： Eur. J. Org. Chem 出版者： Weinheim: WILEY-VCH Verlag 出版日期： 2014-10 出處： European journal of organic chemistry, 2014-10, Vol.2014 (28), p.6163-6174 資源來源： Wiley Online Library 版權： Copyright © 2014 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim 版權： Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim 識別號： ISSN: 1434-193X 識別號： EISSN: 1099-0690 識別號： DOI: 10.1002/ejoc.201402622
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